they have a fast clock cycle speed of 200MHz, but they operate at loose timings.

RAM is like a CPU, the clockspeed isn't that important because it's how much it can do within each clock cycle that determines it's performance. think of your RAM sticks as a celeron processor, it can run at a fast clock speed, but cannot compare to a Pentium4 at the same clock speed. the P4 will blow it away.

a RAM stick that operates at fast speeds and tight timings is a "fast" RAM stick. your RAM operates a fast speeds, but slow timings.